Diesels in Hi perf cats 30-40 ft range.
 

Has anybody installed a hi perf diesel in a cat ? I read here somewhere someone put a yanmar in an mti.

Never heard the final test numbers, or how well it got on plane etc.

Any info would help, Im thinking of puttying yanmars in a 32 skater with multispeed trannys and surface drives.

Curtis

Re: Diesels in Hi perf cats 30-40 ft range.
 

I've seen them in the MTI which i think ran just over 100 and in a Nortech 3600.

Re: Diesels in Hi perf cats 30-40 ft range.
 

I remember reading, but dont quote me, 102mph on the MTI

Re: Diesels in Hi perf cats 30-40 ft range.
 

What do you consider "Hi Perf"? The Yanmar 440 or the newer 480 (500 hp)? Seatek?

The new 480 weighs in at roughly 1450 lbs minus gear. It gained some weight over the 440.

These engines might be a tight fit in the boat as they are longer than their V8 counterparts.

Anyone heard anything good/bad about the hammerhead V8's? Light, 948 lbs, 4,000 rpm and 400 hp.

Ilmor 625's with a 3 speed multi speed box in a flat deck 32' might be a far better fit.

Re: Diesels in Hi perf cats 30-40 ft range.
 

A guy I know had what I believe were 440 Yanmars in a 36 Spectre with two speed trannies. He said he ran right about 100 mph, but he could have gotten more if he could get bigger props. He also said he ran in a poker run, and did some running after it and burned 80 gallons of fuel.

Re: Diesels in Hi perf cats 30-40 ft range.
 

The same guy now owns a 32 Spectre with 625 Ilmors. He said the 32 has a better ride than his 36.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Im thinking the 480 yanmars not the new 500's they seem to heavy. Also Im thinking of a 3 or 4 speed tranny.

Props shouldnt be a problem.

Curtis

Re: Diesels in Hi perf cats 30-40 ft range.
 

Yanmar is working on some stuff for a couple BIG cats, not sure about small though.. 480's in a 40 ft range rudder boat with Weisman trannys woudl be an idealk setup for me. You need a light boat to start with if your going to put diesels in, but it has to be big enough to be able to balance the boat properly. 32 will be too small with yanmars. Maybe Hammerheads woudl be better.
Ill also echo the statment about the Ilmors, especially with a quickshift tranny, would be awesome more power and lighter then a 525. Fastboats.com has a 32 spectre with ilmors i wanna check out.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Its only about 200lb heaver than a 525 merc.

There should be plenty of room to move it forward for balance, even in a 32. Dont really want to go with 36 to big.

Curtis

Re: Diesels in Hi perf cats 30-40 ft range.
 

The 480 is actually 500 hp.

The 200 lbs is without the gear weight which might not be any more than the weight of a Velvet Drive (109 lbs).

The engine room in a 32' will be full with a 6 cylinder engine. The V8's are like 42" and the 6 cylinders need like 66" and the V10's ?? I think like 6" or so longer than a V8.

Wonder how smooth the Faulkner V12 would be? Light and torquey.

Hammerhead has the same dimensions as the V8 and relatively light.

Re: Diesels in Hi perf cats 30-40 ft range.
 

What about a DURAMAX ??? ON another thread some one said there are twin turbo DURAMAX @ 600/700 HP and the same or more in torque. I think one or two of those would do the trick. Also same LBS. as 525 AW.

Re: Diesels in Hi perf cats 30-40 ft range.
 

I read that thread, but no way to find any info.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Who has the marine version of the Duramax?

Re: Diesels in Hi perf cats 30-40 ft range.
 

Google "Hammerhead Diesel"

They are used in Norway/Sweden and there is a company in the Caribbean that distributes them along with a company in Louisiana I believe.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Hammerhead is the old style GM diesel BEFORE the DURAMAX and there have been a lot of factory improvements in the last few years. Factory 405 HP and 600+ TQ. put a BANKS programer and a few other of his GOODIES and your up to easy 500HP and 700/800 TQ. with up to date computer controls. THE PROBLEM IS no one seems to be selling a marine package yet. That will be a GOLDMINE for that company. I'll be there cash in hand and then couple that with one of RIK's #6 or #7 and your ALL SET!!!!!! AW

Re: Diesels in Hi perf cats 30-40 ft range.
 

GM doen't sell any Duramax's to marinizers because they can't keep up with demand for pickup trucks now. Hopefully sometime in the future.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Re: Diesels in Hi perf cats 30-40 ft range.
 

Funny you say that. I know someone in LA that tried to purchase two of these engines to put in a boat.

The dealer refused to sell him the engines without a VIN from his trucks.

Re: Diesels in Hi perf cats 30-40 ft range.
 

GM is developing a marine version, the tommy bahama pleasure conversion MTI is getting one of the first sets...

Re: Diesels in Hi perf cats 30-40 ft range.
 

but not in purple.

Re: Diesels in Hi perf cats 30-40 ft range.
 

So If you had a truck, coudl you rip out the engine, then order a new one for it, saying you messed it up somehow, then do that again to have a set of engines? How much is the marinization cost? What if I have a Sierra with a gas engine, think they woudl buy that im trying to convert it to diesel? But then messed up so i need another one? Is the duramax that much lighter then the yanmar or just able to make more power?

Re: Diesels in Hi perf cats 30-40 ft range.
 

??? I was told the truck has to be a diesel engine truck. Maybe as others have said it has to do with supply? Does anyone work for a GM dealer?

The beauty of the engine is:

LOA, same as a conventional V8. The 6 Cylinder Yanmars are quite a bit longer. This allows for CG flexibility.

Weight, 948 lbs (Hammerhead marinized) where as the Yanmar 440 is 1136 and the 480 is 1450 ish. All without a transmission.

RPM, 4,000 rpm which is good for performance and propeller selection.

Cost, the duramax is under $20 k from the dealer. Marinized? Yanmar is??

Service, can this engine be serviced or parts obtained from a local GM dealer? If so that is a huge bonus.

Exhaust, I see they are using the CMI headers so there is probably more cross over parts (sea pumps, brackets, P.S. Pumps and Brackets) from standard Marine Engines than would be the case of other engines.

They certainly have a lot of positive things going for them.

Re: Diesels in Hi perf cats 30-40 ft range.
 

What is a Merlin diesel? I've seen ads for boats that have them.

Re: Diesels in Hi perf cats 30-40 ft range.
 

It cant be that hard to get one, find someone with a chev duramax truck, and have them order you one.

Marinizing wouldnt be that hard if you used closed cooling, would it ? Headers would probably be the big issue, Im sure cmi would make you some custom ones.

What is reliable HP/torque with chips etc ?

CM

Re: Diesels in Hi perf cats 30-40 ft range.
 

Stay away from the merlin, I have a friend with two they are tempermental at best. Its an old ford truck motor, they have mechanical injection high compression etc.

And you cant find anybody that can work on them.


CM

Re: Diesels in Hi perf cats 30-40 ft range.
 

Also what about going to the junkyard and getting a duramax out of a totaled truck ? Would be a cheap way to get a spare.

CM

Re: Diesels in Hi perf cats 30-40 ft range.
 

The new higher hp version is a 2006 model. People chip these things and run the hell out of them but I do not know the hp of the chipped engines.

The salvage yards are probably the best idea. They simply do not care about the VIN issue but what I found from a customer attempting to use a Cummings out of a Dodge was a bit troublesome.

The engines are electronic. He purchased an engine that was out of a stick shift truck.

So far so good. He gets it home and attempts to start wiring the engine. All bad!

Seems the engine needs a clutch sensor to be there to tell the engine it is okay to start when the clutch is depressed. No clutch major no start issue.

So someone will have to be able to tap into these electronic boxes and eliminate the clutch signal or Park/Neutral signal that the engines need in order to start.

I think the Duramax uses the standard BBC exhaust port sizes so the standard CMI BBC engine headers will work.

Re: Diesels in Hi perf cats 30-40 ft range.
 

Well I'll be damned. That's a bit of usefull information. Someone's sure to try this now.

Re: Diesels in Hi perf cats 30-40 ft range.
 

what about the turbo? i would guess it would need to be swapped to a water cooled unit...

Re: Diesels in Hi perf cats 30-40 ft range.
 

Or a heat blanket? What are they doing on the Hammerhead?

Is Yanmar's water cooled or just heat isolated?

I saw the CMI header thing somewhere. Who ever is a CMI dealer could ask.

Re: Diesels in Hi perf cats 30-40 ft range.
 

maybe BANKS could be convinced to solve the elec/computer hook ups. If he had a list of interested buyers I'm sure that would help. OR maybe one of the HOT ROD re- wire company's like PAINLESS that advertizes solving computer hook up problems. Maybe a list of ten or more serious DURAMAX buyers with a willing GM dealer could solve the purchase prolbem. IT would agood hunk of $$$$$$$ and GM isnt doing that well at the moment!!! You could put my name on that list. AW

Re: Diesels in Hi perf cats 30-40 ft range.
 

What about fuel ? Does it have a mechanical pump or electric ? The return line should be no problem.

CM

Re: Diesels in Hi perf cats 30-40 ft range.
 

Fuel.. Really good filter and some anti bacteria growth additive if you are not using the boat for a month or more. Done.

Re: Diesels in Hi perf cats 30-40 ft range.
 

hammer head
Technical Specifications

*Horsepower - 300 MD300SC
*Torque - 515 Lb-Ft
*Displacement - 6.5L
*Configuration - V8
*Bore & Stroke - 4.055 x 3.818 In *Compression Ratio - 18:1
*Fuel System - Indirect Pre-Combustion
*Rated RPM - 3,600
*Alternator Amperage - 100

Re: Diesels in Hi perf cats 30-40 ft range.
 

Tigershark 400 hp, 948 lbs, compact dimensions, super-charger and polished exhaust system

Re: Diesels in Hi perf cats 30-40 ft range.
 

The Mti In Question Runs A Little Over 100 Currently Pulling It Apart To Install A Two Speed , Which Should Give Us A Little Over 17 Mph Increase.. My 36 Spectre With The 440 Yanmars Would Run A Little Over A Hundred Also 1;24 Gear Though 3 Mpg That Boat Just Ran The Key West Poker Run This Year Miami To Kw 86 Gals Of Fuel Loaded With 6 Men Lots Of Booze And A Few Essentials To Live With.. We Have Done A 40 Skater Also Ex-race Boat [relief Band,flowmaster] With 440 Also .. My New 32 Spectre With Ilmors Is One Incredible Package Cuda Is Correct It Does Ride Better Than The 36 Did But Its Up For Sale Time To Build Another Diesel Project The 32 Has 12 Hours On It .it Made Its Debut In Kw This Year What A F-ing Ride ..anyone Looking For A New Demo 32 With The 625 V-10 Motors Custom Paint By Ocean - Graffix On A New Trailer Call Nick 813-417-6424.. Anyone Needing Any Info On Diesel Converisions We Are Currently Preparing To Set Fourth On Two New Projects Each Being A 50 Callan Which We Will Be Installing Large Yanmars In ....

Re: Diesels in Hi perf cats 30-40 ft range.
 

How much hp and What drives in the Callans, thanks Jeff

Re: Diesels in Hi perf cats 30-40 ft range.
 

how about a 32 skater what would you put in it ?

Re: Diesels in Hi perf cats 30-40 ft range.
 

what year skater ? is it already rigged? what kind of speed do you want.. all top end or cruise?

Re: Diesels in Hi perf cats 30-40 ft range.
 

an older skater, will be a conversion from bb's, im thinking a 3 or 4 speed tranny with arnesons.